When we built my mother's inground and heated pool (with cement and heavy polyvinyl lining) in Burlington in the 1970s, we centered it in the middle of her property, with I think about 20 feet on the west, east, and south sides of the pool and a small hedge on the perimeter of the property, as well as a chain link fence (the minimum required by law). Despite all this, as soon as the pool was finished, our next door neighbour dumped a paper bag of sh*t on our front doorstep, set it on fire, and rang our doorbell. I saw him running away, and called the cops, and he was later given a fine. It seems no matter how much you do to accomodate your neighbours when you have a pool, someone will take issue with you. So there's sometimes two sides to pool stories, although anyone who would locate a pool (especially those ugly above-ground pools) right next to a neighbour's lot is simply asking for trouble.
BTW, after almost two years of dealing with the cranky neighbour who hated my mother's pool (I think he was just jealous) - and we didn't have children or outdoor music - my mother (retired) packed up and moved. Because of the beautiful heated and inground pool (which cost us just $4,000 because we did the work ourselves except for digging the hole) my mother sold the house for almost double what she paid for it, so the story had a happy ending. But she never again had a swimming pool of her own - one bad neighbour was enough for her.